Tkeca is
a TCL/TK frontend for Kai Vehmanen's
ECASOUND. So you will need it in order to use Tkeca.

It's intended to have all the ECASOUND
features including: unlimited number of tracks, volume and pan control
on each track, up to 8 effects for each track, LADSPA support,
multitrack support, multiple inputs/outputs/soundcards, effects
preview, multiple takes on each track, mute track and more.